JPS6041264Y2 - Mobile net tensioning prop device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a mobile net tensioning support device used for tensioning a net for badminton, tennis, volleyball, etc.

The first purpose of this invention is to provide a mobile net-stretching prop device that allows the props to be rotatably supported on a movable table, and that allows the props to be laid down almost horizontally and folded flat for compact storage. be.

The second purpose of this invention is that it can be moved to a predetermined location by running on wheels like a trolley, and when the support is installed upright, the moving platform must be slightly lifted and the action of the weight can be applied. To provide a mobile net-stretching support device configured to be used with maximum effectiveness and stable support.

Next, this invention will be explained with reference to illustrated embodiments.

FIG. 1 shows a state in which the movable net-stretching prop device, which is an embodiment of this invention, is stored with the prop 1 laid down substantially horizontally and folded.

At this time, the movable platform 2 supporting the column 1 has front wheels 3 and rear wheels 4.
This is grounded on the floor 5 of a gymnasium, etc., and is movable.

FIG. 2 shows a state in which the same mobile net-stretching strut device is used, with the struts 1 erected vertically and the net 6 stretched thereon.

In this case, the base plate 7 attached to the lower end of the support column 1 is in contact with the floor surface 5, so that the front wheels 3 are slightly raised above the floor surface 5.

Further, the rear wheel 4 is floating above the floor surface by lowering the positioning weight 8' included in (forming a part of) the fixed weight 8 and touching the floor surface 5.

Fig. 3 shows a state in which the support 1 is simply erected vertically, but Fig. 4 shows a pair of frames 10, 10 constituting the movable table 2 at a predetermined angle in preparation for tensioning the net. Shown when unfolded horizontally.

As described above, the movable table 2 includes a pair of horizontally rotatable frames 10.10, a fixed weight 8 attached to the rear end of the frame 10.10, and a fixed weight 8. ) Use the positioning weight 8'.

The front wheel 3 is attached to the front outer surface of each frame 10.

As shown in detail in FIGS. 5 to 7, the column 1 has a lower end of a hinge base 11 fixed to the lower part of the column 1, and upper and lower restraint plates 12.
The upper end of a post support 14, which is vertically fixed to the front edge of the support post 13 and has a half-tube shape with an inner diameter equal to the outer diameter of the support post 1, is connected by a hinge 15, and the support post 1 is attached to be able to rise and fall freely.

Therefore, the support column 1 can be rotated clockwise in FIG. 6 using the hinge 15 as a fulcrum, and can be tilted approximately horizontally as shown in FIG. When standing up, the support is stopped by the support support 14, so this position is the limit of rotation.

The base plate 7 is the lower end of the column 1 that rotates around the hinge 15 as described above, and does not interfere with the rotation of the column 1 and allows the column 1 to be vertically rotated as shown in FIG. When standing, it sinks almost horizontally under the lower restraint plate 13 and makes contact with the ground, thereby raising the front wheel 3 from the floor 5 in a dimensionally considerate position and in a direction approximately perpendicular to the axis of the support column 1. The weight of moving platform 2 is transferred to support 1.
The support is provided so that the support can maintain a stable upright state by transmitting the information to the support.

The upper and lower restraining plates 12 and 13 are joined at the center of their rear ends by a connecting plate 27.

The front portion of the frame 10.10 inserted between the upper and lower restraining plates 12 and 13 is horizontally rotatably connected with a bolt 16, as shown in FIG.

That is, the guide sleeve 17 is passed through and fixed to the front part of the frame 10, and the tip of the bolt 16 passed perpendicularly from the upper restraint plate 12 into the guide sleeve 17 is screwed into the screw hole of the lower restraint plate 13. It is connected.

Next, a positioning knob 19 is provided on the frame 10 at a position close to the bolt 15.

That is, as shown in FIG. 6, the guide sleeve 18 is passed through the frame 10 and fixed, and the shaft portion 19a of the positioning knob 19 is passed through the guide sleeve 18, and the threaded portion 19b is inserted into the lower side. The horizontal rotation position of the frame 10 is fixed by screwing into a screw hole 20 (FIG. 7) provided at a predetermined position of the restraint plate 13 or a screw hole 21 of the base plate 7 (FIG. 6).

That is, in the folded storage state shown in FIG. 1, the frames 10, 10 are arranged in parallel as shown in FIG.

At this time, as shown in FIG. 7, the threaded portion 19b of the positioning knob 19 is screwed and fixed into the threaded hole 20 provided at the corresponding position of the lower restraint plate 13.

Therefore, when storing or moving the two frames 1
0.10 will not rotate around and become unstable.

In addition, when using the frame 10.1 as shown in FIG.
0 is unfolded horizontally at a predetermined angle, as shown in FIG. The screw hole 21 of the base plate 7 is
Screw it into place.

Therefore, since the horizontal deployment state of the frame 10.10 is fixed and the base plate 7 is fixed at the same time, the upright state of the support column 1 is firmly fixed and the net can be stretched.

Next, FIGS. 8 and 9 show a configuration in which a positioning weight 8' forming a part of the fixed weight 8 can be placed on the ground alternately with the rear wheel 4.

That is, the fixed weight 8 has an arm portion 8a with a square cross section projecting rearward, and a rear wheel 4 made of a swivel caster is attached to the lower surface of the arm portion 8a.

The positioning weight 8' has a mouth shape that straddles the arm portion 8a so that it can move up and down.

The arm portion 8a and the positioning weight 8' placed astride the arm portion 8a are connected to each other by screwing in a reverse threaded shaft 23 formed by vertically dividing a left-hand thread 23a and a right-hand thread 23b into approximately two parts. An adjustment knob 24 is attached to the upper end.

Therefore, when the adjustment knob 24 is turned to the right, the right-hand screw 23b is screwed into the screw hole 26 of the arm 8a (progressing downward), and at the same time, as a result of the screw movement between the left-hand screw 23a and the screw hole 25, The rotational positioning eight 8' is also about to descend, and eventually the positioning weight 8' moves relative to the fixed weight 8, descends greatly, and touches the floor 5.

In other words, the rear wheel 4 is raised by lifting the arm 8a.

In this way, the front part of the movable platform 2 is supported by the base plate 7 which is in contact with the ground, and the rear part is supported by the positioning weight 8' which is in contact with the ground.As a result, each ground contact part generates a large force with the floor surface 5, resulting in a positioning and fixing effect. Therefore, sufficient stability is provided even if the net 6 is stretched over the support 1.

Note that the net 6 is generally used by being stretched in the direction shown in FIG.

Since this invention is based on the movable net-stretching prop device having the above-mentioned configuration, it has the following effects.

The vertically movable support can be folded horizontally and folded flat to make it compact, making it convenient to store and store without taking up much space.

Furthermore, the frame of the movable table can be horizontally rotated by a predetermined angle to unfold it, and the net can be stretched by installing it on the floor, so to speak, so that it can be used with high stability.

Furthermore, transportation is convenient because it can be carried out by running the front and rear wheels of a mobile platform that supports the column.

In addition, when setting up the net, the posts can be erected and the net can be fixed stably and reliably using fixed weights provided on the movable table.

[Brief explanation of the drawing]

Fig. 1 is a front view of a mobile net-stretching prop device which is an embodiment of this invention with the props folded down; Fig. 2 is a front view of the props with the props erected and a net stretched; The figure is a perspective view of the prop in an erected state, Figure 4 is a perspective view of the movable platform frame unfolded, Figure 5 is a plan view of the main parts, and Figures 6 and 7 are VI of Figure 5. -Vl, ■-■ sectional views, and FIGS. 8 and 9 are sectional views of essential parts showing the elevating mechanism of the positioning weight. 1... Prop, 2... Moving platform, 3...
...Front wheel, 7...Base plate, 12.13
...Restraint plate, 10...Frame, 8...Fixed weight, 4...Rear wheel,
8'...Positioning weight.

Claims (4)

[Scope of utility model registration request] (1) A moving platform is constructed from two frames whose front parts are connected horizontally to the restraining plate, and a net tensioning column is attached to the front part of the moving platform by a hinge means via the restraining plate. 1. A mobile net-stretching strut device, characterized in that the lower end is rotatably supported, and the strut is configured to be fixed in an upright position. (2) The mobile net tensioning prop device according to claim 1, wherein the mobile platform has wheels. (3) The movable net tensioning prop device according to claim 1 or 2, wherein the movable platform has a weight at the rear end. (4) A base plate is attached to the lower end of the column in an almost perpendicular direction, and when the column is erected, the base plate enters the lower side of the restraining plate and is configured to be able to slightly lift the front end of the mobile platform. Scope of Utility Model Registration Claims Paragraph 1 or 2
The mobile net tensioning support device according to item 1 or 3.